Tramway-plate.



No. 7|4,o57. l Pattentedmv. 1s,- |902.4

n. STONE. TRAMWAY PLATE.

(Application led Mar. 15, 1902.)

(No Model.)

UNITED STATES @PATENT OFFICE.

ROY sToNE, OE NEw YORK, N. Y.

TRAMWAY-PLATE.

SPECIFICATION forming part of Letters Patent N o. 714,057, datedNovember 18, 1902. implication led March 15, 1902. Serial No. 98,282.(No model.)

fo all whom, it may concern:

Beit known that I, ROY STONE, a citizen of the United States, residingin the borough of Manhattan, city, county, and State of New York, haveinvented an Improvement in Tramway-Plates, of which the following is aspecification.

My invention relates to tramway-plates used for surface traction uponhighways and in towns, and the same comprises a plate of metal havingtapering flanges extending downward and outward from the body of theplate, the surface of the body of the plate being provided with suitablerecesses to act as footholds for horses. The edge between the face ofthe plate-body and one of the tapering flanges is suitably notched atequispacedintervals. The notchedportionsalong this edge are preferablycut alternately irst in one direction and then in the other and theremaining spaces left at the normal angle between the plate-body and thetapering flange. The opposite edge I prefer to provide with a raisedfiat rib broken at equidistant intervals by forcing the metal of the riboutward into a series of side lips between which the rib parts form anumber of upright projections or rib-sections. The tops of the lips aresomewhat below the top of the upright projections and may, if desired,run back to the level of the plate-body.

In the drawings, Figure l is a perspective View, broken, of myimprovedtramway-plate. Fig. 2 is a partial plan ofthe same; and Fig. 3 is asection on line .fr no, Fig. l.

a represents the body of a tramway-plate, having tapering side anges bb, extending downward and outward. The face of the plate-body ct ispreferably provided at suitable intervals with depressions or recesseso, which provide a foothold for horses and with which the c alks oftheir shoes may engage.

The edge between the face of the platebody a and the flange b isprovided with notches d, preferablycut alternately, first in onedirection and then in the other. Every interval between the notches CZis the normal edge of the plate at the intersection of the face of theplate-body and the flange l).

e represents a number of upright projections or rib-sections extendinglongitudinally along the opposite edge of the tramway-plate.

out over the flange b.

Between the upright projections e are a number of lips or lateralprojectionsf, extending The upper surface of the lips f is somewhatlower than the top of the projections e and is preferably tapered orrounded back to the level of the face of the plate-body a.

The object of so constructing both edges of the plate is to give a holdto and aid vehicle-wheels to readily mount the plate when the vehiclecrosses at an acute angle from the earthy material of the ordinaryhighway.

I claim as my inventionl. A tramwayplate comprising a platebody,tapering side flanges, and alternating upward and outward projectionsalong one edge, the other edge being provided with alternatingI notchedand straight-edged portions, substantially as set forth.

2. A tramway-plate comprising a platebody, having slight depressions inthe surface thereof, integral tapering side flanges, and alternatingupward and outward projections running longitudinally along one edge;substantially as set forth.

3. A tramway-plate comprising a platebody in the surface of which areslight depressions at regular spaced apart intervals, and integraltapering side anges extending outward and downward from the plate, theedge between one of said flanges and the surface of said plate beingprovided with notches alternating in the direction of the cut, andstraight edges, substantially as set forth.

4. A tramway-plate comprising a platebody in the surface of which areslight depressions at regular spaced apart intervals, integral taperingside flanges extending outward and downward from the plate, andalternating upward and outward extending projections runninglongitudinally along one edge, the opposite edge being provided withnotches alternating in the direction ofthe out, and straight edges,substantially as set forth.

Signed by me this 10th day of March, 1902.

ROY STONE.

